A look at the simplest FM demodulation technique. It doesn’t give the lowest possible output distortion, it doesn’t reject amplitude distortion effects, but it is simple and can be used at virtually ...

We recently saw how certain audio power amplifiers can be used as oscillators. This Design Idea shows how those same parts can be used for simple amplitude modulation, which is trickier than it might ...

People generally don’t confuse the sounds of singing and talking. That may seem obvious, but it’s actually quite impressive—particularly because we can usually differentiate between the two even when ...